Here is my 100% Achievement Guide!
Timestamps below the video! :)
After you have grown some flowers using a merry-go-round and a trampoline, head back to your house.
Go around the back of the garden and go towards your pool, it will change colour and the achievement will unlock :)
1. Access Granted - 2:10
2. Occultism and Common Sense - 3:15
3. G For The Logic - 5:55
4. Nevermind - 6:40
5. Fields Of Fire - 8:05
6. Jock! Start The Engine! - 8:40
7. Riddles On The Pavement - 9:45
8. I Want To Hold Your Hand - 11:30
9. A Thin Red Line - 12:40
10. I Hate Portals - 17:00
11. Rise and Shine - 18:00